Moscow (CNN) A Russian agent sent to tail opposition leader Alexey Navalny has revealed how he was poisoned in August -- with the lethal nerve agent Novichok planted in his underpants. Konstantin Kudryavtsev revealed he traveled to Omsk in Siberia to try to clean up evidence after Alexey Navalny was poisoned. After identifying most of the team, CNN and Bellingcat tried to contact them and their superiors. The FSB has launched a "check" of Navalny's investigation and will give "a procedural assessment" following its results, the statement said. Navalny and his team have several times demanded that his clothes be returned to him , but Russian authorities have refused.

Source: CNN December 21, 2020 12:10 UTC